Abstract:
A wireless communication system is disclosed. Specifically a channelization method in a whitespace band and an apparatus for the same are disclosed. A method for providing whitespace operation information includes transmitting by a first station (STA) to a second STA a frame including a TV whitespace high throughput (TVHT) operation information field. The TVHT operation information field includes primary channel number channel width channel center frequency segment 0 and channel center frequency segment 1 subfields. A channel center frequency of frequency segment 0 or frequency segment 1 is determined based on a channel start frequency. The channel start frequency is determined as a function of a TV channel index corresponding to the frequency segment 0 or a TV channel index corresponding to the frequency segment 1.
Abstract:
La presente invención se refiere a un método para recibir un canal de control de enlace descendente por medio de una terminal en un sistema de canal inalámbrico y un aparato para lo mismo. En particular, el método para recibir un canal de control de enlace descendente por medio de una terminal en un sistema de canal inalámbrico incluye las etapas de: dividir al menos un bloque de recursos asignado a la terminal en el número preestablecido de subconjuntos; seleccionar uno o más subconjuntos para la terminal a partir del al menos un bloque de recursos; establecer el conjunto de subconjuntos seleccionado como un espacio de búsqueda para la terminal; y realizar la decodificación ciega para el espacio de búsqueda para detectar el canal de control de enlace descendente, en donde el número preestablecido de subconjuntos se desmodulan respectivamente por las señales de referencia de desmodulación (DM-RS) definidas con diferentes puertos de antena en cada uno de los bloques de recursos.
Abstract:
The present invention relates to a method for receiving a downlink control channel by means of a terminal in a wireless channel system and an apparatus for same. In particular, the method for receiving a downlink control channel by means of a terminal in a wireless channel system includes the steps of: dividing at least one resource block allocated to the terminal into the preset number of subsets; selecting one or more subsets for the terminal from the at least one resource block; setting the selected subset set as a search space for the terminal; and performing blind decoding for the search space to detect the downlink control channel, wherein the preset number of subsets are respectively demodulated by demodulation reference signals (DM-RS) defined with different antenna ports in each of the resource blocks.
Abstract:
The present invention relates to a method and apparatus for transmitting a channel measurement reference signal for measuring channel state from user equipment, and a method and apparatus for receiving the channel measurement reference signal. The base station of the present invention transmits power information concerning a plurality of nodes to user equipment capable of receiving signals from the plurality of nodes, and the plurality of nodes each transmit respective channel measurement reference signals. The power Information includes channel measurement reference signal, transmission power for each of the plurality of nodes and information indicating downlink data transmission power ratios. The user equipment calculates channel state information on the plurality of nodes based on the power Information and the channel measurement reference signals from the plurality of nodes.
Abstract:
The present invention concerns a capability information transmission method in a wireless mobile communication system wherein, when a terminal having a predetermined capability reports the capability of the terminal to a base station, the reporting comprises the steps of: connecting to an external apparatus comprising at least an antenna; and reporting, to the base station, information giving the capability as changed by the connection with the external apparatus.
Abstract:
Disclosed herein relates to a method and apparatus of sleep mode operation in a multi-carrier system. In a communication system of transmitting and receiving data using a multi-carrier including a primary carrier for transmitting and receiving control information and data and a secondary carrier using a radio frequency (RF) different from the primary carrier, a method of establishing a sleep mode operation through active primary and secondary carriers according to an embodiment of the present invention may include transmitting a sleep cycle ID (SCID), a listening window, and traffic indication inactive information indicating that an indication (TRF-IND) as to whether traffic is generated is not transferred to a terminal through the primary carrier, sending downlink data to the terminal through the active primary or secondary carrier during the listening window, and sending a listening window early termination indication indicating to early terminate the listening window of the primary or secondary carrier that has received the downlink data through the primary carrier to the terminal if the data sending is completed.
Abstract:
The present invention relates to a wireless communication system. More particularly, the present invention relates to a method and apparatus for reporting channel state information (CSI), wherein the method in which a terminal reports CSI comprises the steps of: receiving configuration information for periodic CSI reporting from a base station; and transmitting CSI information for each of a plurality of sets of CSI reports based on said configuration information to said base station via a physical uplink control channel (PUCCH). Said plurality of sets of CSI reports contains one or more mutually different subframes.
Abstract:
As channel state information of multiple nodes in a multiple node system, the present invention relates to a method and a device for transmitting and receiving information showing a correlation between said multiple nodes. Also, the present invention relates to a method and a device for transmitting and receiving a Channel Quality Indication (CQI), in consideration of signal strength transmitted by multiple nodes.
Abstract:
The present invention discloses a method of a terminal to reduce interference between cells in a multicell system. In more detail, the method includes: receiving information on at least one adjacent base station from a serving base station; receiving a reference signal from the at least one adjacent base station on the basis of the information on the at least one adjacent base station; measuring interference for each transmitting antenna of the at least one adjacent base station by using the reference signal; and transmitting interference information on the each transmitting antenna to the serving base station.
Abstract:
According to one embodiment of the present invention, an access point (AP) downlink (DL) multi-user (MU) transmission method in a wireless communication system comprises the steps of: transmitting a DL MU physical protocol data unit (PPDU), the DL MU PPDU including a trigger frame, which includes trigger information for uplink (UL) MU transmission, and a DL MU frame; and UL MU-receiving a UL MU PPDU generated on the basis of the DL MU PPDU, wherein the UL MU PPDU can include a UL MU frame based on the trigger frame and an acknowledge (ACK) frame which is a response to the DL MU frame.
Abstract translation:根据本发明的一个实施例,无线通信系统中的接入点(AP)下行链路(DL)多用户(MU)传输方法包括以下步骤:传送DL MU物理协议数据单元(PPDU),所述 包括触发帧的DL MU PPDU和DL MU帧;所述触发帧包括用于上行链路(UL)MU传输的触发信息; 以及UL MU-接收基于DL MU PPDU生成的UL MU PPDU,其中UL MU PPDU可以包括基于触发帧的UL MU帧和作为对DL MU的响应的确认(ACK)帧 帧。